Platen-shift.



M. w. HAZEN & 0. PETERMANN.

PLATEN SHIFL APPLICATION FILED JUNE 7, I909- RENEWED AUG.31,1915. 1,178,446, Patented Apr. 4,1916.

{SHEETS-SHEET 1.

nrlonmsrs J M. W. HAZEN & O. PETERMANN.

PLATEN SHIFT.

APPLICATION FILED JUNE 7. I909. RENEWED AUG. 31, 1915.

1, 178,446. Patented Apr. 4, 1916.

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INVENIORS m. m. a mm m ATTORNE Y5 UNITED STATES ratrsntr OFFIfiE.

MARSHMAN W. HAZEN AND OTTO PETERMANN, OF NEW ,YORK, N. Y., ASSIGNORS, BY

MESNE ASSIGNMENTS, TO CORONATYPEWRITER COMPANY, INCORPORATED, A COR- PORATION OF NEW YORK.

PLATEN-SHIFT.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Original application filed March 27, 1909, Serial No. 486,181 Divided and this application filed June 7,

l 1909, Serial No. 500,697. Renewed August 31, 1915. Serial No. 48,350.

v Yrk,'county and State of New York, have invented certain new and useful lmprdve i ments in Platen-Shifts, of which the following is a full, clear, and exact description.

-This invention relates more particularly to platen shifts for typewriting machines, and is a division of our pending application, Sr. No. 486,181. filed March 27th, 1909, which has matured into Patent No 1.094.560, dated Apr. 28, 1914.

The primary object of the invention is to provide simple and efficient means whereby a carriage may have two frame members. in one of which the platen is mounted and. which is adapted to have a relative movement with respect to the other frame member so as to permit the same to be properly shifted to adapt the type-bars to ha ve. a plus rality of characters thereon.

A further object of .the invention is to provide simple means for moving the platen vertically and at the same time permit the platen and its support or frame member to form a part of thecarriage.

Viththese and other objects in view. the

invention will be hereinafter more particularly described with reference to the accompanying drawings. \vhich form a part of.

this specification, and will then be pointed out in the claims at the end of the description.-

in the drawings, Figure 1 is a rear elevation of one form of machine cml'iodying our invention. Fig. 2 is a longitudinally sectional View. Fig. 3 is a detail view of one of the carriage frame mcmbcrs detached. Fig. 4 shows how one of the carriage frame members is slotted tdpermit relative movement of the other frame member: and Fig. .3 is a fragmentaifis side elevation of the carriage and frame. showing a part of the guiding means for the vertically movable frame member.

The machine has a frame 10 of any suitable construction. and supported within the frame are brackets 11 in which a plurality of key-levers '12 are pivoted. and these levers each have a pin 13 which engages a slot ll in the eiid of a type-bar l5. The type-bars former of which the plate 16 is secured.

may be secured to the part 21 of the carriage frame member 19 or otherwise held as de sired in a position so that the paper or work may be readily passed about the same, though instead of the type striking directly against a metal surface, a yielding surface or strip 21 may be provided and said strip may be so attached that it may be readily replaced in case of'wcar. A bar 22, Figs. 1- and 2. extends trans\-crscly of the machine to the rear of the fixed platen 16. and to the bar may be held the work-engaging fingers 22* which may be adjustable along the bar 22 by means of the screws 22. lly this means the work may be properly guided about the platen 16 so as not to interfere with the type and cause the same to make two impressions where a plurality of char actors are formed on the type head, as the work immediately on leaving the printing point is made to bend over the surface of the curved platen.

'A roll 23 corresponding to the usual platen roll may be iournalcd in the frame member 1!) of the carriage 17. and may be provided with finger pieces or handles 2-l by which the roll may be rotated, the said finger pieces 24 being secured to the shaft f the ,roll 22-). and to permit the roll and" platen frame to move vertically the carriage frame member .20 is slotted at 24- where the shaft passes through said member. At the rear of the roll 23 is a second smaller roll 25, which normally engages the roll 23, and at the front of said roll 23 is a stil sumllcr roll 20. The shaft 27 of the roll is hold in slots 28 in the frame member 1!) and has peripheral grooves at the ends thcrcof, and

I springs 29 which have one end connected to levers 30.

one direction by screws 39 to vary the ten.

sion of said springs.

The platen may be raised or lowered to different degrees according to the number of characters or type on thetype-bars 15.

If there are three characters there should be two shift keys and if only two characters only one shift key is necessary. In the form shown only one shift key is provided for the purpose of illustrating how the platen may be raised. The shift key-lever 40 is held to a transverselyextending rod or shaft 41, and its inner end is pivotally connected at 42 to the vertically-extending bars 43, the latter being connected to move in unison and may be braced by means of the rod 44. Oneof the bars 43 may be provided with a projection i5 which is limited in its more ment by means of the screws -16 arranged at the upper and lower portion of a bracket 47 secured to one of the side members of the frame. The upper end of the bars or members d3 may be secured to a transverselyextending bar 48 which is adapted to move vertically with. the platen and its frame member 19, as the platen in this instance moves vertically and not the entire carriage. As before stated only one shift keylever is shown, but two may be provided which are adapted to move the platen and paper feed mechanism, as it), and to lock the same in its adjusted position to position the platen for either the upper case letters or figures.

To properly support the carriage and the platen and paper feed, and to compensate for wear, we may provide a ball-bearing connection between the carriage and the machine frame or parts thereof, to adapt the carriage and platen to move readily across the machine. Adjacent to the bar 48 is a normally fixed bar 50 extending transversely the carriage frame. The pins serve to guide These levers30, Fig. 3, are

the bar 53 in its vertical movement with the platen, and interposed between the bearing bars 52 and 48 are balls or hearing members These bearing members may be two in number, and maybe connected by a wire to,m0ve in unison, and extending upward from the bar 48 may be one or more brackets 56 the upper end of which may be bent at any angle to extend over the upper sur face of the bar 53. The bar 50 is fixed to the machine-frame while the bar 52 is fired to the carriage, and the bearing bars 48 and 53 are both movable vertically with the platen frame member 19 independent of the carriage frame member 20, though only the bar: 52 moves transversely with said ca 'rriage frame members.

A second bearing-57 isprovid'edm This bearing comprisesra plurality. of. bars or, members58, 59 and 60. The intermediate bar or hearing member 59 is fixed to the main frame, and the-upper surface of said bar as well as the lower surface of bar 60 are each provided with a V-shaped groove in which the bearing balls or members 01 are supported, and under-the bar 59 are the bearing balls or members 62, the said bars beingsufiiciently spaced apart to permit the said balls to be properly supported between the same. i I

The lower bearing bar 48 with the upright bars or members 43 and the transverse rod 4% connecting the lower ends of the bars l3 together form a substantially rectangular and rigid frame whereby the bearing bar 48 and the platen may be positively elevated by the platen shift levers from both sides of the machine. The platen will thus be prevented from tilting and the hearing will be rigidly maintained in any of its shifted positions.

It will be understood that instead of the normally stationary platen shown in the drawings, the usual form of platen may be employed.

While we show and describe certain features of the machine other than the platen shift, such features are covered in other copending applications. The feed mechanism is claimed in our application Sr. No. 500,698,

filed June 7, 1909; the paper feed in our application Sr. No. 500,696, filed June 7,

1909; the platen in our application Sr. No.

500,695, filed June 7, 1909; and the key;

levers in our application Sr. No. 500,694,

filed June 7, 1909.

From the foregoing it will be seen that simple and eflicient means are provided for moving the platen vertically with respect to the other part of the carriage to adapt the same to permit the type-bars to have a plurality of characters thereon; and that a simple and-etlicient frame for the platen and carriage is provided.

Having thus described our invention, we

claim as new and desire a) secure by Letters Patent 1. In a typewriting machine, the combination with printing mechanism, of a support, a carriage having two frame members adapted to move along said support, a platen mounted'in oneof the frame members, a bar extending transversely of the support and fixed thereto, a vertically-movable bar slidin'gly held in the support and arranged in parallel relation with the firstmentioned bar, a bar carried by the carriagementioned bar, screws projecting from the first-mentioned bar and serving to guide the vertically-movable bar, a bar car'ried by the carriage frame member on which-the platen is mounted and located above the verticallymovable bar, a ball-bearing connection be- *tWeen said bars, means for elevating said latter bars and platen and also the frame in which the platen is mounted, and a ballbearing connection for the lother carriage frame member. J

2. In a typewritingmachine, the combination with printing mechanism, of a support, a carriagehavlng two frame members adapted to move along said support, one of which is vertically slidable within the other, a platen mounted in one of the frame members, a bar extending transversely of the support and fixed thereto, a vertically-movable bar slidingly held in the support and arranged in parallel relation with the firsttion with printing mechanism, of a support,

a carriage adapted to move along said support, a platen mounted in the carriage, a

guide bar extending transversely of the sup-' port and fixed thereto, a vertically movable bearing bar slidingly held in the frame and arranged in parallel relation with the firstmentioned bar, a second vertically movable bearing bar carried by the carriage and located adjacent to the slidingly held bar and cooperating therewith, and means for elevating said bars and platen, I

4. In a typewriting machine, the combination of a carriage having a bearing, a platen mounted upon the carriage, an independent bearing including transversely-extending" bars having relative lengthwise movement but also adapted to move vertically with the platen, upright bars or members connected to the lower bearing bar and rigidly held thereto, means for limiting the upward movement of said chars, a transversely-extending .rod connecting the up right bars at the lower "end to provide a su stantially rigid frame, and a shift lever connected to the frame vate the same.

5. In a typewriting machine, the combination of a carriage having a bearing, a platen mounted upon the carriage, and independent bearing including transversely-extending bars having relative lengthwise movement but also adapted to move vertically with the platen, upright bars or members connected to the lower bearing bar and rigidly held' thereto, means for limiting the upward movement of said bars, and a shift lever connected to the frame and adapted to elevate the same. This specification signed and this 4th day of June, A. D. 1909.

MARSHMAN W. HAZEN. OTTO PETERMANN. Witnesses:

W. A. TOW'NER, Jr., C; BARTEIB.

witnessed and adapted to ele- 

